Upcoming 100 Milers

Endurance Grid lists fifty-six 100 milers across the US, from September 2026 to September 2027 across 25 states.

56
Races
25
States

What a 100 Mile is

A 100-mile race is a running race where athletes run 100 miles long (160.9 kilometers) for time.

100 milers are busiest in October and December, with the most in Texas, North Carolina, Michigan, and Arkansas.

Frequently Asked Questions

How many 100 Mile running races are there in the US?
Endurance Grid's Race Calendar lists 56 upcoming 100 Mile running races across 25 states.
How far is a 100 Mile running?
A 100-mile race is a running race where athletes run 100 miles long (160.9 kilometers) for time.
Which states have the most 100 Mile running races?
The states with the most 100 Mile running races on Endurance Grid's Race Calendar are Texas, North Carolina, Michigan, Arkansas, California, and Florida.